Link to http://www.aeolusproject.org instead of https variant

https://www.aeolusproject.org is down.
Merge pull request #304 from iNecas/readme-fix

Link to http://www.aeolusproject.org instead of https variant
Fixed translation keys before Gettext conversion
Fixed keys in en.yml before Gettext conversion
Set configuration for using Gettext
Converting simple t-keys to Gettext format
Converting t-keys with variables to Gettext format
Modified t-keys with count variable

Removed count variables where we used explicitly count = 1
Converting t-keys with plurals or interpolation to Gettext form
Added .POT and .PO files after gettext conversion